Agricultural implement



March 12,1940. J, Am 2,193,157

AGRICULTURAL IMPLEMENT Filed April 25, 1939 3 Sheets-Sheet 1 L InveniotA v 9 By .1 p2,... Aiiomeys Ch 12, 1940. J. AYQ 2,193,157

AGRICULTURAL IMPLEMENT Filed April 25, 1939 3 Sheets-Sheet 2 InventorAttorneys March 12, 1940)., J AYQ 2,193,157

' AGRICULTURAL IMPLEMENT Filed April 25, 1939 3 Sheets-Sheet 5 InventorPatented Mar. 12, 1940 UNITED STATES AGRICULTURAL IMPLEMENT lshmealJoseph Ayo, New Iberia, La., assignor of one-half to Eddie Joseph Ayo,New Iberia, La.

Application April 25, 1939, Serial No. 269,963

2 Claims.

This invention relates to new and useful improvements in agriculturalimplements and more particularly to a harrow.

The principal object of the present invention is to provide anagricultvzai implement in the nature of a harrow which is adapted torotate in the soil in such a way as to break up clods and efficientlyremove grass and other weeds.

Another important object of the invention is to provide a harrow of thecharacter stated which can be elevated or lowered for the proper earthpenetration.

These and other objects and advantages of the invention will becomeapparent to the reader of the following specification.

In the drawings: I

Figure 1 represents a side elevational view of the implement attached toa tractor.

Figure 2 is a top plan view of the implement attached to a tractor.

Figure 3 is a sectional view taken substantially on line 3-3 of Figure2.

Figure 4 is a top plan view of the rotor.

Referring to the drawings wherein like numer- 5 als designate likeparts, it can be seen that in Figures 1 and 2 numeral 5 generally refersto the conventional tractor which has the driven shaft housing 3 mergingwith the rear axle housing l in which is the rear axle t.

The numeral 9 denotes a power take-off stub shaft from the rear axle 8or its difierential, as the case may be, and this shaft 9 is connectedto the stub. shaft in of the-implement generally referred to by numeralii through the agency of the slip coupling generally referred to bynumeral iii, the same consisting of the tube I3 having the member i4slidably but notrotatably disposed therein, with one end of the tube I3connected by the universal joint i 5 to the stub shaft l0 while theouter end of the slidable member i4 is connected by the universal jointit to the stub shaft 9.

Ears ll on the housing 7 have rearwardly inclined arms ill-l8 extendingtherefrom, the upper rear ends of these arms i8 supporting the shaft I9which has the depending lever 20, forwardly from which extends thecontrol rod 2! Extending rearwardly from the shaft l9 are the arms22-22, each of which has at its rear end a laterally offset rearwardlyextending finger 23 defining a fork and disposed vertically through eachof these forks is the eye-bolt 24. In each of these yokes is a swingablymounted apertured slot through which the corresponding eye-bolt 24 isdisposed. The upper end portion of each of these eye-bolts 2t isthreaded as at 25 and has a washer 26 and nut 21 engaged thereon. Acoiled compressible spring 28 is interposed between the aforementionedswingable block and the corresponding washer 2t.

Depending and pivotally secured to the eye end of each of the eye-bolts28, as at 29, is a link eye it which in turn is pivotally secured at itslower end as at 38 to the gear case 32 of the implement ll. 10

A cross plate 33 is secured to the top of the case 32 and from the endportions of this plate 33, brace members 34 and 35 extend downwardly toconnect to the angle members 36 and 31 respectively which are secured tothe rearwardly 15 disposed angle members 38, the latter being pivotallysecured as at 39 to the pivotal arms which extend rearwardly from theears M.

The gear case 32 has a bearing structure 39 through which the stub shaftit extends. The g inner end of the stub shaft II] has the bevel gear 50which meshes with the bevel gear M at the upper end of the verticalshaft 42, the latter extending vertically through the barrel 43 whichdepends from the case 32. The case 32 has the 25 removable plate M whichpermits access to the interior of the gear case.

I'he rotor of the implement ll consists of the annulus 35, the hub plate66 and the hub block M. The hub 46 has a plurality of radially and 30arcuately disposed and shaped spokes 41 which are suitably secured as bywelding, or otherwise at their outer ends to the underside of theannulus 45. Spikes t8 depend from the arms 41 in staggered relation withrespect to each other, 35 the upper ends of these spikes being threadedto accommodate the nuts 49 which clamp against opposite sides of thearms 41 and in some instances the annulus 45.

It can be seen that when the power take-off is 40 operated after the rod2! has been adjusted to lower the implement to the ground, the drivewill be through the stub shaft 9, connection i 2 and stub shaft Ill, byway of the gears an and 4| and shaft 42 to the rotor shown in Figure 4.45

While the foregoing specification sets forth the invention in specificterms, it is'to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as 5 claimed hereinafter.

Having described the invention what is claimed as new is:

1. The combination with a tractor having a rear axle housing, and apower takeoff shaft ex- 55 tending rearwardly from the axle housing, ofa circular harrow head, and means to mount said head on the rear of saidtractor for rotation about a vertical axis and for vertical adjustmenttoward and from the ground comprising a pair of upper and lowerspaced-apart frames extending rearwardly from said tractor andvertically swingable in unison, a vertically disposed sleeve fixed inthe lower frame, a gear casing surmounting said sleeve and fixedthereto, an axial shaft upstanding from said head and Journaled in saidsleeve for rotation by said gears, operating connections between saidpower takeofi and gearing including a shaft and universal joints betweensaid shaft and said takeofl and gears,manually operative means forswinging the upper frame, and yielding connections between said upperframe and said gear casing.

2. The combination with a tractor having a rear axle housing, and apower takeoif shaft extending rearwardly from the axle housing, of acircular harrow head, and means to mount said head on the rear of saidtractor for rotation about a vertical axis and for vertical adjustmenttoward and from the ground comprising a pair of upper and lowerspaced-apart frames extending rearwardly from said tractor andvertically swingable in unison, a vertically disposed sleeve fixed inthe lower frame, a gear casing surmounting said sleeve and fixedthereto, an axial shaft upstanding from said head and journaled in saidsleeve for rotation by said gears, operating con-

